--- title: "Mattermost fails to validate user's authentication method when processing account auth type switch" system_id: "mattermost" category: "platforms" advisory_mode: "core" published_date: "2026-03-16T15:30:47Z" updated_date: "2026-03-19T19:31:20.982512Z" severity: "low" exploit_status: "unknown" source_confidence: "ecosystem-authority" verification_status: "triage-manual" verification_mode: "synthetic" artifact_mode: "synthetic" last_run_id: "" target_types: - "lab-local" - "lab-public" - "authorized-third-party" allow_public_validation: "yes, with ownership or explicit authorization" authorization_prerequisite: "asset ownership proof or explicit written authorization" minimal_validation: "read-only probe, controlled payload, reversible test" aliases: - "CVE-2026-22545" - "GHSA-rv67-7w2g-7976" affected_versions: - "introduced=0, fixed<8.0.0-20260127144908-ced9a56e3988" - "introduced=0, fixed<5.3.2-0.20260127144908-ced9a56e3988" - "introduced=10.11.0-rc1, fixed<10.11.11" - "introduced=11.2.0-rc1, fixed<11.2.3" - "introduced=11.3.0-rc1, fixed<11.3.1" fixed_versions: - "8.0.0-20260127144908-ced9a56e3988" - "5.3.2-0.20260127144908-ced9a56e3988" - "10.11.11" - "11.2.3" - "11.3.1" secure_code_topics: - "authz-server-side-recheck" - "xss-output-encoding" - "token-cookie-storage" - "dependency-upgrade-policy" primary_source: "https://nvd.nist.gov/vuln/detail/CVE-2026-22545" --- # Mattermost fails to validate user's authentication method when processing account auth type switch ## 本地实证状态 - 实证状态: `triage-manual` - 实证方式: `synthetic` - Artifact 模式: `synthetic` - 最近运行: `-` - 浏览器证据: `missing` - Run Bundle: `-` ## 事件层 - Canonical ID: `mattermost--CVE-2026-22545` - 系统: `mattermost` - 严重度: `low` - 来源置信度: `ecosystem-authority` - 官方主源: https://nvd.nist.gov/vuln/detail/CVE-2026-22545 - 影响版本: `introduced=0, fixed<8.0.0-20260127144908-ced9a56e3988, introduced=0, fixed<5.3.2-0.20260127144908-ced9a56e3988, introduced=10.11.0-rc1, fixed<10.11.11, introduced=11.2.0-rc1, fixed<11.2.3, introduced=11.3.0-rc1, fixed<11.3.1` - 修复版本: `8.0.0-20260127144908-ced9a56e3988, 5.3.2-0.20260127144908-ced9a56e3988, 10.11.11, 11.2.3, 11.3.1` ## 其他来源 - https://github.com/mattermost/mattermost/commit/ced9a56e3988fe9fd4559d45f9971dbd562e2218 - https://github.com/mattermost/mattermost - https://mattermost.com/security-updates ## 实验层 - 仅用于自有资产、测试环境或已明确授权目标。 - 允许公网可达目标，但必须满足资产归属或明确授权前提。 - 最小化验证方式: 最小化验证、只读探测、可审计回显、受控注入。 - 若该案例涉及插件、模块或扩展，应同时检查供应链与升级策略。 - 禁止场景: 无归属证明或无明确授权的公网目标；知名公共网站或与测试无关的第三方资产；会造成持久破坏、数据越权下载或不可回滚影响的动作 ## 修复示例 - [javascript-typescript:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/javascript-typescript/authz-server-side-recheck.md) - [nodejs:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/nodejs/authz-server-side-recheck.md) - [java:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/java/authz-server-side-recheck.md) - [php:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/php/authz-server-side-recheck.md) - [python:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/python/authz-server-side-recheck.md) - [ruby:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/ruby/authz-server-side-recheck.md) - [csharp:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/csharp/authz-server-side-recheck.md) - [go:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/go/authz-server-side-recheck.md) - [javascript-typescript:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/javascript-typescript/xss-output-encoding.md) - [nodejs:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/nodejs/xss-output-encoding.md) - [java:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/java/xss-output-encoding.md) - [php:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/php/xss-output-encoding.md) - [python:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/python/xss-output-encoding.md) - [ruby:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/ruby/xss-output-encoding.md) - [csharp:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/csharp/xss-output-encoding.md) - [go:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/go/xss-output-encoding.md) - [javascript-typescript:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/javascript-typescript/token-cookie-storage.md) - [nodejs:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/nodejs/token-cookie-storage.md) - [java:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/java/token-cookie-storage.md) - [php:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/php/token-cookie-storage.md) - [python:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/python/token-cookie-storage.md) - [ruby:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/ruby/token-cookie-storage.md) - [csharp:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/csharp/token-cookie-storage.md) - [go:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/go/token-cookie-storage.md) - [javascript-typescript:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/javascript-typescript/dependency-upgrade-policy.md) - [nodejs:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/nodejs/dependency-upgrade-policy.md) - [java:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/java/dependency-upgrade-policy.md) - [php:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/php/dependency-upgrade-policy.md) - [python:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/python/dependency-upgrade-policy.md) - [ruby:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/ruby/dependency-upgrade-policy.md) - [csharp:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/csharp/dependency-upgrade-policy.md) - [go:dependency-upgrade-policy](/Users/x/websafe/05-defense/secure-code/go/dependency-upgrade-policy.md)